Home / 1,312,104.52-1,968,778.86-780,675.40

Finding the Fourth Proportional to 1,312,104.52, 1,968,778.86 and 780,675.40

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Solution

The fourth proportional to 1,312,104.52, 1,968,778.86 and 780,675.40 is: 1,171,383.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,104.52 : 1,968,778.86 = 780,675.40 : x
  2. Step 2: Convert to fraction form
    1,312,104.52/1,968,778.86 = 780,675.40/x
  3. Step 3: Cross multiply
    1,312,104.52x = 1,968,778.86 × 780,675.40
  4. Step 4: Simplify right side
    1,312,104.52x = 1,536,977,224,042.04
  5. Step 5: Solve for x
    x = 1,536,977,224,042.04/1,312,104.52
  6. Step 6: Final answer
    x = 1,171,383.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.